Kostya Plutenko's Flash action game Moonlight (available at Newgrounds and Kongregate) is a simple, relaxing experience that features gameplay similar to Sega's arcade classic Deep Scan.

In Moonlight, players move left and right across the top of the screen, and drop lanterns on the fish below using the Z key. Higher point values are awarded if you can get a lantern to bounce multiple times before it drops off the bottom of the screen, and extra shots are awarded every 20,000 points. I enjoyed this quite a bit!